A quick insight into some of the characters that will make an appearance.
House Targaryen:
Daenerys Targaryen
Viserys Targaryen
House Stark:
Eddard "Ned" Stark
Catelyn Stark née Tully
Sansa Stark
Bran Stark
Robb Stark
Arya Stark
House Lannister:
Tywin Lannister
Cersei Lannister
Jamie Lannister
Tyrion Lannister
Joffrey Lannister
Myrcella Lannister
Tommen Lannister
House Baratheon:
Robert Baratheon
Renly Baratheon
Stannis Baratheon
House Tyrell:
Margaery Tyrell
Loras Tryrell
Olenna Tyrell
Mace Tyrell
House Tully:
Hoster Tully
Brynden Tully
Edmure Tully
House Arryn:
Jon Arryn
Lysa Arryn
Robert Arryn
House Greyjoy:
Balon Greyjoy
Euron Greyjoy
Victarion Greyjoy
Aeron Greyjoy
Theon Greyjoy
Asha Greyjoy
House Nymeros Martell:
Doran Martell
Elia Martell
Oberyn Martell
Ellaria Sand
Arianne Martell